Fix AppRTC target configuration in libjingle_examples.gyp.

libjingle_peerconnection_objc doesn't exist as a target in 32bit, so AppRTCDemo
needs that guard as well.

R=andrew@webrtc.org

BUG=

Review URL: https://webrtc-codereview.appspot.com/18489004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6292 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/libjingle_examples.gyp b/talk/libjingle_examples.gyp
index 6d3dcff..9a8bb44 100755
--- a/talk/libjingle_examples.gyp
+++ b/talk/libjingle_examples.gyp
@@ -218,7 +218,7 @@
       ], # targets
     }],  # OS=="linux" or OS=="win"
 
-    ['OS=="ios" or (OS=="mac" and mac_sdk>="10.8")', {
+    ['OS=="ios" or (OS=="mac" and target_arch!="ia32" and mac_sdk>="10.8")', {
       'targets': [
         {
           'target_name': 'AppRTCDemo',
@@ -290,7 +290,7 @@
           },
         },  # target AppRTCDemo
       ],  # targets
-    }],  # OS=="ios" or (OS=="mac" and mac_sdk>="10.8")
+    }],  # OS=="ios" or (OS=="mac" and target_arch!="ia32" and mac_sdk>="10.8")
 
     ['OS=="android"', {
       'targets': [